One of the world's first cogwheel trains used to travel up the Kahlenberg to 1,588 feet (484 meters) above sea level.

Instead of going all the way to St. Moritz, we were well advised to descend one stop earlier and take the cogwheel train to the terrace cafe at Muottas Muragl.

Harvath took a last look back at the Hotel Derby and Grand Hotel Regina, which flanked the Grindelwald train station, as he crossed the platform toward the cogwheel train.

"So the cogwheel train is direct, no transfers?"

Stroll along Las Ramblas in the heart of Barcelona, Take the cogwheel train to Nuria Valley, Hike in the Spanish Pyrenees, Watch the sun set over Carcassonne's .

Take a cogwheel train into the Nuria Valley and then stretch legs on a hike in the picturesque Pyrenees.